The art of Prolog: advanced programming techniques
The art of Prolog: advanced programming techniques
Semantic database modeling: survey, applications, and research issues
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A logical language for data and knowledge bases
A logical language for data and knowledge bases
Logic programming and databases
Logic programming and databases
An introduction to formal languages and automata
An introduction to formal languages and automata
The interface between language theory and database theory
Theoretical studies in computer science
Incomplete path expressions and their disambiguation
SIGMOD '94 Proceedings of the 1994 ACM SIGMOD international conference on Management of data
From structured documents to novel query facilities
SIGMOD '94 Proceedings of the 1994 ACM SIGMOD international conference on Management of data
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Evaluating queries with generalized path expressions
SIGMOD '96 Proceedings of the 1996 ACM SIGMOD international conference on Management of data
Deductive database languages: problems and solutions
ACM Computing Surveys (CSUR)
On the foundations of the universal relation model
ACM Transactions on Database Systems (TODS)
Database description with SDM: a semantic database model
ACM Transactions on Database Systems (TODS)
Journal of the ACM (JACM)
An efficient context-free parsing algorithm
Communications of the ACM
Finding authorities and hubs from link structures on the World Wide Web
Proceedings of the 10th international conference on World Wide Web
Introduction to Formal Language Theory
Introduction to Formal Language Theory
Ranking user's relevance to a topic through link analysis on web logs
Proceedings of the 4th international workshop on Web information and data management
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Information Systems - The 13th international conference on advanced information systems engineering (CAiSE*01)
The ρ operator: discovering and ranking associations on the semantic web
ACM SIGMOD Record
LDL: A Logic-Based Data Language
VLDB '86 Proceedings of the 12th International Conference on Very Large Data Bases
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Ρ-Queries: enabling querying for semantic associations on the semantic web
WWW '03 Proceedings of the 12th international conference on World Wide Web
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ICDM '03 Proceedings of the Third IEEE International Conference on Data Mining
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SemRank: ranking complex relationship search results on the semantic web
WWW '05 Proceedings of the 14th international conference on World Wide Web
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Information Processing and Management: an International Journal - Special issue: Informetrics
A query language for discovering semantic associations, Part II: sample queries and query evaluation
Journal of the American Society for Information Science and Technology
Discover: keyword search in relational databases
VLDB '02 Proceedings of the 28th international conference on Very Large Data Bases
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Semantic associations are direct or indirect linkages between two entities that are construed from existing associations among entities. In this paper we extend our previous query language approach for discovering semantic associations with an ability to retrieve semantic associations that, besides explicitly stated (base) associations, may contain associations derived using logic-based derivation rules. As will be shown, this makes it possible to find semantic associations that are both compact and intuitive. To implement this new feature, we introduce a rewriting principle that utilizes derived associations to reduce resulting semantic associations if possible. Other proposed means to assist the interpretation of query results include answer expansion and the ordering of answers. The incorporated answer expansion feature lets the user investigate rewritten semantic associations in a query result at the desired level of detail. The ordering of answers is based on the lengths of the resulting semantic associations, whereby priority is given to shorter semantic associations which often express close and relevant relationships.